Lubricator.



PATENTED APR; 11, 190"a E, DENEGRE. LUBRIGATOE.

APPLICATION FILED 1 213.2, 1905.

2 SHEETS-SHEET l- EDW'ARD DENEGRE,

PANY, OF CHICAGO, ILLINOIS, A.

Patented April 11, 1905.

OF QHEGAGQ, iLLiNOiS, ASSIHNOR TO MCCORD & COM

iJQEPORATiON OF NEW? JERSEY.

SPECIFIEATIQN forming part of Letters Patent No. "287,155, dated April 11, 1905.

Application filed February 2, 1995. Serial No. 243.791.

able reservoir to hearings or other working parts, such as the cylinders and bearings of automobile-motors, engines, and other mechamsms.

The invention consists of the combinations and arrangements of parts hereinafter particularly described and then pointed out in the'appended claims. I

In the accompanying drawings, which illustrate one embodiment of the invention, Figure 1 is'a vertical transverse section of an oilreservoir, showing one of the sets of cooperating pumps located therein, the pumps being shown partially in section for convenience of illustration. Fig. 2 is a longitudinal section on the line 2 2 of Fig. 1, one end of the reservoir being broken away. Fig. 3 is a section on the line 3 3 of Fig. 1. Fig. 4: is a detail plan view showing the pump-barrels of each associated set of pumps and the arrangement of the communicating ports and passages. Fig. 5 is a section substantially on the line 5 5 of Fig. 4, and Fig. 6 illustrates another type of valve for controlling the airport for the connection between the cooperating pumps.

Referring to the drawings, 10 designates a suitable reservoir, which may be of any preferred size and shape. This reservoir is shown as provided with a cover'll, removably secured in place by screws 12. The reservoir is designed to contain one or more sets of cooperating pumps, each of which sets comprises a primary pump for drawing the oil from the reservoir andan auxiliary or delivery pump to which the oil is forced by the primary pump and which delivers the oil to the hearing.

In the present instance the bar rels l3 and 14 of the primary and auxiliary 5o pumps, respectively, are vertically disposed and project upwardly from a body 15, having a screw-threaded nipple 16, which passes through an opening in the bottom of the reservoir, as shown in Fig. 1. A nut 17 in threaded engagement with the nipple 16 serves to clamp the body 15, and consequently the pump-barrels 13 and 14c, rigidly in position.

The barrel 13 of the primary pump is provided with an inlet 18, controlled by a suitable checlevalve 19, and a discharge-port 20, controlled by asuitable valve 21. A tube 22 communicates with the dischaege-port 20 beyond the valve 21 and at its upper end enters a pipe 23. The pipe 23 is'located on the cover 11 and is in threaded engagement with the tube 22. A nut 24 looks the pipe 23 in position. The pipe 23 is bent laterally at its up-' per-end and is provided with a depending nozzle 25, which projects downwardly through the cap 26 of a sight-feed glass 27, which is suitably secured on a base-ring 28, passing through the cover 11. The sight-feed glass is provided with suitable packing to render the same air-tight. A. tube 29 screws at its upper end into the base-ring 28 and is in salinement with the nozzle 25 and its lower end is in threaded engagement with the body 15, which isi'provided with a passage 30, leading to the iniet 31 of the barrel 14 of the auxilf 8o iary pump. This inlet is controlled by a suitable vaive 32, and the discharge-port 33 of the auxiliary or delivery pump is controlled by a valve 34:, and leading from beyond the latter is a passage 35 in the nipple 16, through which the oil passes to a suitable pipe (not shown) extending to the part to be lubricated. The plunger 36 of-the auxiliary nump is l ifxed to the lower arm 37 of a yoke 38.; The

plunger 39 of the primary pump. is provided at its upper end with an extension 40, having an elongated slot 41 to receive an extension 42 of the yoke 38. The upper arm 43 of the yoke 38 is provided with an inverted substantially U-shapcd plate &4, and passing through the top of the plate 44: is a stem 45, the lower. end of which is pivoted, as at 46. in the upper arm 43 of the yoke. As shown in Fig. 1, the

mary pump, such arm conforming generally other tool to turn the same.

pump.

stem 45 is screw-threaded,as at 47, where it extends between the sides of the U-shaped plate 44 and is in threaded engagement. with an arm 48, extending toward and entering the slot all in the extension of the plunger of the prito the curvature of the yoke, as shown. A collar 49 on the stem as prevents vertical movementof such stem-when the latter is re tated', and the arm 48 is guided and held from turning when adjusted by the parallel sides of theU-shaped plate 44. The upper end of the stem is polygonal in cross-section and enters a similarly-shaped socket in a button 51, carried by the cover. The button 51 is rotatably mounted on the'cover, being retained in position by a ring 52, suitably secured, as by bolts 53, to the under face of the cover. The button 51, as shown in Fig. 1, projects through an aperture in and extends above'the coverand may be milled,'a?s shown, so as to be readily turned by hand, or it may be suitably shaped to receive a wrench or The barrel 13 of the primary pump is provided with a pair of guides 54', which receive between them a lug on the yoke and serve to guide the yoke as it reciprocates.

It is obvious that the tube 22, pipe 23, nozzle 25, sight-feed glass 27, and tube 29 provide a continuous connection leading from the air-port 56, which preferably communicates, as shown in Fig. 3, with the connection ex.- terior to the reservoir, as with the passage in the pipe 23. This port may be opened and closed in any suitable manner or by any suitable means. In the present instance I have shown a valve for this purpose. Such valve may consist of an ordinary three-way valve.

57, located at the intersection of the air-port with the passage in the pipe 23 and which when in one positionopens the air-port, as shown in Fig. 3, and when turned one hundred and eighty degrees ,from the position shown in said figure opens the air-port without in either ease obstructing the passage in the pipe 23. Any other suitable form of valve may be em ployed--as, for instance, that shown in Fig. 6, where the valve 58 is an ordinary one-way-valve for opening and closing the port. A handle 59, fixed to the valve, is employed to turn the valve. Under normal zonditions that is to say, when both pumps ire operating properly-the air-port is open, LS shown inFig. 3.

An eccentric is suitably journaled on the mds of the reservoir and may be rotated in my suitable manner. This eccentric cooperites with the ,vokes 38 to reciprocate the plungers 36 and As the plunger 36 is fixed to he yoke, its stroke will he constant. The troke of the plunger 3901* the primary pump,

.primary pump to the auxiliary or delivery This connection 18 provided with an l its valves to unseat, iowever, may be varied by turning the 'eutl the sight-feed glass.

5 l l l ton 51. When this button is turned, the arm as will be raised or lowered, depending upon the direction of rotation this means lost motion between the yoke and the plunger 39 may be varied, so as to vary the rate of delivery of the primary pump. As shown in Fig. 1, of the plunger 36 is greater than that of the plunger 39, so that even when the plunger 39 makes a full stroke the capacity oi the primary pump is less than that of the auxiliary or delivery pump. This difference in capacity may be increased by adjusting the arm 48, so as to provide lost motion between the yoke 38 and the plunger 39.

In the operation of the lubricator oil is sucked from the reservoir past the valve :19 by the plunger 39 of the primary pump and then forged up'past the valve 21 into the! tube 22 and through the pipe 23 and nozzle'25, the oil falling in drops through the sight-feed glass, so as to indicate thera't-e of delivery of the primary pump. After'passing'through the sight-feed glass the oil-drops into the tube 29 and is then drawn therefrom by the plunger 36 past the valve 32 and forcedout past the valve bearing is of greater capacity than the prim'ary'pum p, a supply of air equal to the difference between the capacities of the pumps is drawn through the port 56 to the auxiliary pump and forced by the latter, with the oil, to the bearing. I

in pumps of this character it frequently happens that the oil-passages become clogged or that the valves become fixed-to their seats,

so that while the plungers continue to recipof the stem, and by.

the cross-sectional area 34. through the passage 35 to the' As the auxiliary or delivery pump rocate no oil is delivered to the bearing.

Under the present invention so long as one pump 1s operative for'supplying oil the. other pump may be readily renderedv operative if for any reason it'becomes ineifec tive. If, for example, the primary pump fails to pass oil through the sight-feed, the valve 57 is turned, thereby closing the air-port '56. .Assuming the auxiliary pump to be operating properly, its reciprocation will createa vacuum in the connection between the pumps, thereby sucking the oil past the valves 19 and 21' and clearing or washing away any obstructions, so that the suction-pump will again be in con dition to operate properly and as intended. The valve 57 may thenihe turned topper) the air-port, so that the d ivery pump will be supplied with air, as before. The closing of this valve'in the manner described makes the auxiliary pump a suction as well as delivery.

of operation. oil will be supplied to thebeab ing. If, on the other hand, the auxiliary pump should fail .to deliver oil,owing to an I obstruction in the passages orthe failure of the oil will back up into VJ hen this happens, the

reams air-port 56 may be closed, and this will create a pressure-chamber in the sight-feed glass, so that the primary pump will become a forcepump and force the oil through the auxiliary pump past the valves of the latter to the bearing. This pressure of the primary pump will serve not only to unseat the valves of the delivery-pump, but also force out any ob again.

' -'oil is required than is then being delivered the valve 57 may be closed, and the auxiliary pump will then draw oil to its full capacity past the primary pump and force it to the hearing. The air-port may then be opened n again, and the primary and auxiliary pumps willcooperate, so as to deliver at the same rate as before. An advantage of this is that when it is desired to temporarily increase the rate of delivery this may be accomplished without disturbing the adjustment of the pri- .mary pump.

While I have shown and described a valve for closing the airport 56, it is obvious that that port may be closed in any other suitable i to clear the other.

manner. The same results may be secured by employing, for example, the finger to close the air-port.

By reason of the arrangement of the button 51 means are provided for adjusting the stroke of the primary pump during the operation of the pump, thereby avoiding the necessity of stopping its operation when it is desired to vary the rate of feed, and this button entirely closes the aperture in the cover, so that the reservoir is entirely closed against the admission of dust. The socket 50 is of such length as to always be engaged with the stem 4:5 and not interfere with the reciprocation of the stem as the latter moves with the yoke.'

It is obvious that any number of cooperating sets of pumps may be employed and the yoke of each set actuated'by the common eccentric. In Fig. 2 two of each sets of pumps are indicated.

Having described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a lubricator, .the combination with a reservoir, of a of connected pumps, and means whereby either pump may be utilized to clear the other;

.1. In a lubricatorfthe combination with a reservoir, of a primary pump, an auxiliary pump, a connectio'n between the pumps, and

means whereby either pump maybe'utilize'd 3. In a lubricator, the combir reservoir, a pump, a sight-feed device through which the oil is forced by the pump, a second pump adapted to draw oil from the sight-feed, and provision whereby either pump may be utilized to clear the other.

4. in a lubricator, the combination with a reservoir, of asuction-pump,a delivery-pump, a connection between the pumps, and provision whereby either pump may be made to deliver oil to the part to be lubricated inde.w75 pendently of the other pump.

5. In a lubricator, the combination with a reservoir, ofasuction-pump, adelivery-pump, a connection between the pumps, and provision whereby the suction-pump may be made to. force the oil past and clear the deliverypump or the delivery-pump may be made to suck the oil past and clear the suction-pump.

6. In a lubricator, the combination with a reservoir, of a primary pump supplied by the reservoir, a delivery-pump, and a connection between the pumps having a normally open air-port adapted to be closed when one of such pumps becomes inefiective, and whereby such pump may be cleared by the action of the other pump.

7. In a lubricator, the combination with a reservoir, of a primary pump supplied by the reservoir, a delivery-pump of greater capacity than the primary pump, and a connection between the pumps having a normally open airport adapted to be closed when either of such pumps becomes ineffective, whereby such pump may be cleared by the action of the other pump. I00

8. in a lubricator, the combination with a reservoir, of a primary pump, an auxiliary pump of gr ter capacity than the primary pump, mea; s o vary the stroke of the pri-' mary pump, a connection between the s having an air-port, and'a valve for closii it 10. air-port, whereby either pump may be ut' to clear the other.. I

9. In a lubricator, the combination wit-ha reservoir, of a primary pump supplied by the reservoir, a delivery-pump of greater capacity than the primary pump, a connection leading from the discharge of the primary pump to the inlet of the delivery-pump and including a sight-feed device, the connection haviz; air-port exterior to the reservoir, and a threeway valveadapted to open and close the airport without obstructing the connection.

10. In a lubricator, the combination with a reservoir, of a primary pump supplied by the [20 reservoir, a delivery'pump of greater capacity than the primary pump, means for varying the stroke of the primary pump, aconnection leading from the discharge of the primary pump to the inlet of the delivery-pump and I2 5 including a sight-feed glass, the said connection having an air-port exterior to the reservoir, and a valve for opening and closing the air-port.

kLii i pump of greater capacity. than reservoir; of pair of cooperating pumps, :1 connection between the pumps, a reciprocating yoke to which the'plunger-of one pump is fixed and cooperating with the plunger'of the other pump, and an adjustable arm carriedby the yoke for varying or eliminating lost mo tion between the yoke and the latter plunger.

12. In alubricator, the combination with a reservoir, of'a primary and an auxiliary pun; p located therein, a connection leading from the discharge of the primary pump to the inlet of the auxiliary pump,

a yoke to which the plunger ofthe auxiliary pump is fixed, the plunger of the primary extension on the yoke entering the slot, an arm earriedby the yoke and also entering the slot, a stem for adjusting the arm to vary the stroke of the primary pump, and means for reciproeating'the yoke.

13. Ina lubricatonthe combination with a reservoir, of a primary pump, an auxiliary the primary pump, a eonnectionbetween the pumps and having an air-port, a yoke to'whieh the plunger of the'auxiliary pump is fixed, the plunger of the primary pump having an elongated slot, an extension on the yoke entering the slot, a screw-threaded stem'rotatably mountpump having a slot, an

ed on the yoke, an arm engaging the threaded stem and extending into the slot, and an eo- 1 centric for reciprocating the yoke. I

(14:. In a lubrieator, the combination with a reservoir, a cover therefor havingan aperture, a pump .in the res'ervoir,,a stem for adjusting ,the throw" of the pump, and a button rotatablynlounted on the cover and closing the aperture and having a socket engaging the stem.

15. In a lubricator,,the combination with a reservoir, a cover therefor. having an aperture, a pump int-the reservoir andwvhose piunger is providedvvith an elongated slot, a yoke having an extension entering the slot, an eecentrio for'reciproeating the yoke, a vertical- I screw-threaded stem rotatahiy mounted on the yoke, an arm in threaded engagement with the stem and'entering the said-slot, and a button rotatably mounted in and closing the aperture and having a socket engaging the stem. In testimony whereof l'afiix my signature in presence of two Witnesses.

EDVARU DENEGRE.

Witnesses:

ARTHUR B. SEIBOLD, ELIZABETH Mormon. 

